PSY105 Tutorial 4

Which of the following is a quasi-experiment design that allows for randomization?

• Interrupted time series design

• A-B-A design

• Field experiment

• None of the above!

Based on the graphs, which design is being used?

• Nonequivalent control-group design

• Nonequivalent manipulation-group design

• Equivalent control-group design

• Equivalent time series design

Dr. Simon wishes to conduct a study to observe the difference in number of customers that frequent a café at different times of the day (morning, afternoon, and evening). Which of the following designs is best suited for this study?

• Reversal design

• Field experiment

• Interrupted time series design

• All of the above designs are appropriate

Which of the following statements about time series designs is FALSE?

• Interrupted time series design caters for external validity, while reversal design caters for internal validity.

• Interrupted time series design and reversal design focuses on individual participants, rather than groups.

• Time series designs tend to have a disadvantage against time-related factors, such as participants’ history and maturation.

• There is some control in time series designs.

Which of the following is an example of a quasi-experimental design?

• Coffee drinkers were randomly assigned to either a treatment group or control group to measure effects of dark coffee on attention.

• Participants’ anxiety were measured during a pretest and posttest, where the treatment involved watching funny animal-related videos.

• A researcher manipulated different genres of music to measure its effects on memory retention for undergraduate students.

• None of the above!